Milk agitating and dipping device



June 12, 1951 j s. D. PoLsEN r-:rAL 2,556,739

MILK AGITATING AND DIPPING DEVICE Filed June 7, 1945 6 Sheets-Shea?I 1 `Arro/?NEY I June 12, 1951 s. D. PoLsr-:N ETAL 2,556,739

MILK AGITATING AND DIPPING DEVICE Filed June 7, 1945 6 Sheets-Sheet 2 F/G. Z

IN V EN TOR.

June l2, 1951 s. D. PoLsEN E'rAL 2,556,739

MILK AGITATING AND DIPPING DEVICE Filed June 7, 1945 6 Sheets-Sheet 5 ATTCJRNEY June 12, 1951 s. D. PoLsEN rrr-.AL 2,556,739

MILK AGITATING AND DIPPING DEVICE Filed June '7, 1945 SheelZs-Sheel'l 4 INVENTOR. H6 5 Jdmve/ D. Pa/se/ S. D. POLSEN ET AL MILK AGITATING AND DIPPING DEVICE June 12, 1951 6 Sheets-Sheet 6 Fild June 7, 1945 /Nl/E'NTOP jafm/e/ Z2 Poben Patented June 12, 1951 UNITED STATES PATENT OFFICE MILK AGITATIN G AND DIPPING DEVICE Application June 7, 1945, Serial No. 598,110

8 Claims.

This invention relates to new and useful improvements in dispensing and vending apparatus and has particular relation to an apparatus for dispensing or vending of liquids which tend to stratify and which therefore require mixing in order that the liquid dispensed at each operation of the apparatus will be of a uniform content.

Milk, when left in a container, will so arrange itself that the cream is in the upper portion of the container while the contents of the lower portion of the container is little more than water.

The present invention comprehends a liquid dispensing and vending apparatus in which a liquid to be dispensed may be automatically mixed as a step in each dispensing operation to the end that each such operation results in the dispensing of a liquid of uniform richness in the case of milk and the like and of uniform content in the case of any liquids which tend to stratify.

The objects and advantages of the invention will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawings wherein a satisfactory embodiment of the invention is shown. However, it is to be understood that the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claims.

In the drawings:

Fig. 1 is a top plan view of the apparatusof the invention, the driving motor being omitted;

Fig. 2 is a front elevational View of the mechanism of Fig. 1;

Fig. 3 is a rear elevational view of the same;

Fig. 4 is a sectional View taken as along the line 4 4 of Fig. 2;

Fig. 5 is a detailed sectional view taken as along the line 5 5 of Fig. 1;

Fig. 6 is a vertical sectional view through the righthand end portion of the device showing the motor and the gear drive and brake;

Fig. '7 is a detailed sectional view of the lower portion of the brake means and the mounting thereof;

Fig. 8 is a View partly in section and partly in elevation showing the connection of the lifting chain with a dipper;

Fig. 9 is a sectional View showing the clipper in dispensing position;

Fig. 10 is an enlarged detail sectional view showing a sealing means employed;

Fig. 11 is a sectional view as along the line IIN-II of Fig. 8;

(Cl. Z22- 333) Fig. 12 is a detailed plan view showing the clutch employed when in engaged position;

Fig. 13 is a similar view but with the clutch disconnected;

Fig. 14 is a detailed side elevational view showing a pair of teeth of the clutch when engaged; and

Fig. 15 is a somewhat similar view but with the clutch teeth disengaged.

Referring in detail to the drawings, the apparatus as here shown is particularly adapted for the dispensing of milk from a container such as that generally designated I0 in Fig. 9. The operating mechanism of the invention is for the most part mounted on a base or plate I! disposed above the container I0 and suitably supported independent of the latter. In actual use, the container and the operating mechanism mentioned are mounted in a refrigerator cabinet (not shown) of suitable design so that the contents of the container will be preserved against spoilage and so that the drink served by the dispenser will be cold and palatable.

Container I0 may comprise a body I2 open at its upper end and a closure or head I3 for the body. Head I3 includes upper and lower separable portions or parts I4 and I5 respectively. Lower part I5 comprises an annular depending flange I6, fitting within the neck portion II of the container and further includes a trough I8 also annular and encircling the said flange.

The bottom Wall of the trough I8 inclines toward a Well or depressed portion 2l) from the bottom of which a discharge spout ZI extends to a convenient location. Any liquid placed in the troughwill drain into the well 20 and from the latter through the spout 2|. The upper part I5 of head I3 functions as a covering or closure for the open upper end of the container and also as a cover for the trough I8. This part of the closure includes a ange 22 entering the open upper end of the part I5 and further includes a radial flange 23 limiting movement of ange 22 into the part I5. Closure or head I3 is sealed in any suitable manner (not herein shown) to the body of the container and within such body is a dispensing clipper 24 carried by a bale 25 on the lower end of a rod 26.

Within a necklike portion 21 of the closure, a split spring ring 28 (Fig. '10) anchors one end of an expansible bellows-like structure 29 of paper or the like and comprising a seal. The upper or outer end of this seal 29 is closed as at 30 and disposed over the upper o1' outer end of rod 26. A spider 3| also in the closure comprises a guide for the rod 26 when the same is moved vertically to raise and lower the dipper 24. The container I9 is delivered to the storekeeper or the like with the dipper and its rod in the container and with the seal 29 in place over the rod as shown. Thus it will be understood that the container is sterilized, filled, and then sealed, all at the milk station or the like loading place and is not opened by the storekeeper or other persons at the dispensing station.

Attention is called to a plate 32 on the rod 29 immediately above and outwardly of the dipper and to the fact that the bale is pivoted to the dipper at 33 and to the fact that the dipper has a socket or hollow place 34 in its under or lower side adjacent its rear end. Further, it is noted that the clipper 24 includes inclined edge portions along its pouring portion 35 and that such inclined edges are brought into engagement with a corner portion 36 of the closure or head I3 to cause tilting of the dipper to a pouring position as the dipper is moved into the hollow central portion of the closure.

At the upper side of the base II and cast integral therewith or otherwise suitably secured thereto is a tubular housing 31 opening at its lower end through the said base. A tube 38 of a length stopping short of the container IU has its upper end portion secured in the housing 31. About the lower end portion of the tube 38 is a sleeve 46 and as shown in Fig. 8, this sleeve is adapted to receive a bead 4I at the upper end of the neck 21 of the container closure or head I3.

Mounted on the base II is an electric motor 4I (Fig. 6) on the shaft 42 of which is fixed a worm 43 meshing with a worm gear 44 Xed to a rather long shaft 45 supported at the upper side of the base as in bearings 46 and 41. Freely mounted on the shaft 45 is a structure including a reel 48, a clutch element or lugs 49 fixed to said reel and a worm or feed screw 56. As will later more clearly appear, the reel 48 comprises a movable operating means specifically a rotatable operating means for moving the dipper 24. The reel 48 and worm 56 may be integral or secured together but they turn as a unit and the reel at its side opposite that at which the worm is located is provided with the driving lugs 49 comprising clutch means as will appear.

A chain 52 or other iiexible connecting or connector means has one end connected with the hub portion of the operating means or reel 48 and has its other end passing through the housing 31 and into the tube 38 and therein has such end secured to a coupling 53 (see Figs. 8 and 1l). Chain 52 passes substantially horizontally from the operating means or reel 48 and over a guide pulley or roller 54 within the housing 31 and then downwardly through such housing.

A clutch element 5I includes a platelike body portion 55 at the inner side of bearing 41 and a sleevelike extension 56 extending through said bearing about the shaft 45. The clutch element is slidable in the direction of the length of the shaft but is turnable with the latter being secured thereto as by key 51. Driving lugs 58 extending from the inner face of the body 55 are adapted, when such body is in its most innermost position, to engage with the lugs 49 on the reel device 48 whereby to drive the latter.

The motor 4I always turns in the same direction and when the motor is operating shaft 45 is being driven and if the clutch element 5I is in its innermost position (as in Fig. 5) it will,

through its lugs 58, drive the lugs 49 and thus the reel 48. Under these circumstances the reel is driven in a direction to Wind the chain 52 thereon. This reel is the operating means directly concerned with the elevating of the dipper 24 by the winding up of the chain 52.

Mounted on the base II is a pair of vertical frame structures 59 and 69 supported as from a base 5I bolted or otherwise secured to the plate II. Mounted on an arm 62 of the frame structure- 59 (see Fig. 2) is the long arm 63 of a generally L-shaped lever 64. The mounting is about a pivot means 65 and is intermediate the ends of the arm 63.

The short arm of member 64 is bifurcated whereby it comprises a pair of arms 66 and 51 straddling the bearing 41 and at their lower ends carrying rollers 68 adapted to engage against the outer face of the body portion 55 of the clutch element 5. Lever 64 is actually mounted on a rod or pin 65 supported between the extension 62 of frame member 59 and extension 59 of frame member 56 (see Fig. 3). It will therefore be clear that as said lever is rocked in one direction on the pivot 65 its rollers 68 will be forced against the clutch element 5I pushing the latter toward the reel 48 and that as the lever is rocked in the opposite direction its rollers are carried away from the clutch element permitting the latter to move out of driving relation with the reel 48.

Intermediate its ends the arm 63 of the lever 64 is slotted as at 10 and carries a screw 1I adjustably mounting a camlike button 12. Clearly on the loosening of the screw, it, together with the button 12, may be shifted longitudinally of the arm 63 within the limits provided by the slot 10. Thereafter, on tightening of the screw, the button is secured in place. Just forwardly of the button 12 the arm 63 is stepped providing a pair of vertically spaced shoulders 13 and 14.

These shoulders are adapted to engage on the upper side of the connecting arm 15 of a yoke 16 generally in the form of an inverted U and including side arms 11 and 18 mounted at their lower ends on pivot means 19 supported by the frame members 59 and 60. A small coil spring 86 connects arm 66 and yoke 16 and is constantly tending to draw the latter toward the former. When the shoulder 14 is on connecting portion 15 (Figs. 2 and 5) lever 64 is so positioned that its rollers 68 are forcing the clutch element 5I into driving relation with the reel 48. When the shoulder 'I3 is engaging said connecting portion, lever 64 has moved to a position carrying its roller 68 outwardly with respect to clutch element 5I so that the latter is permitted to move out of driving relation with the reel.

Means are provided for tilting the yoke 16 from the position of Figs. 2 and 5 so as to permit of this shifting of the lever 64 and such means includes a lever 8| having a sleevelike intermediate portion 82 rockable on the pivot 65. The lower arm 83 of this lever is provided with an adjustable screw 84 adapted to be engaged by a plate 85 (later to be described in detail) The upper arm 86 of lever SI has pivoted to it at 81 the rear end of a link 88 whose forward end is pivoted to the yoke 16 at 89. Clearly when the screw 34 is engaged in a, manner to force it rearwardly the entire lever 8| will be rocked about the pivot 65 exerting a forward thrust through the link 88 to rock the yoke 16 forwardly. This is only a slight movement but is sufficient to unseat the shoulder 14 and permit the lever 64 to rock so that its shoulder 13 drops onto the portion 15.

' At the proper time a camlike extension 99 on a nut 9| (later to be described in detail) engages the button 12 and rocks the lever 64 in a direction to have its rollers 69 move the clutch element 5| inwardly into drivingY relation with the reel 48 and at the same time to raise the forward portion of lever arm 63 whereby to permit the spring 89 to rock the yoke 15 back into the position shown in Figs. 2 and 5 wherein the connecting portion 15 of such yoke is .under and engaged by the shoulder 14 of the lever arm 63.

Nut 9| is mounted on the feed screw 59 to be fed forwardly and rearwardly therealong as the screw is turned in one direction or the other. 'Plate 85 is pivotally mounted on one side of the nut 9| as by screw 92. The plate carries a plurality of pins 93 projecting at its forward side and in its rear side it has a series of small sockets or depressions, there being a correspondingr number of the pins and sockets. A ball or other rounded projection 94 (see Fig. 4) is carried by the nut 9| and a coil spring 95 constantlytends to move said ball out of the nut so that when .one of the depressions or sockets comes opposite said ball it is snapped into such socket or depression. v

A screw 99 pivots a tripping lever or member 91 on an extension 98 of the side frame member 59 and such tripping member serves to move the plate 85 at the proper times during operation of the machine. Mounted on the extension 98 as by screw 99 is a latching means |99. When this means is rocked in one direction it engages the arm |9| of the tripping lever 91 and rocks such lever in a direction to carry its forward pin engaging end |92 upwardly to an inoperative position above the level ofthe pins 93 of the plate v85. When the latching means is in the position of Figs. 1 and 2 the tripping lever 91 is horizontally disposed.

The chain 52 (see Figs. 8 and l1) or similar flexible connector means may be connected with the coupling 53 by any desired means although here the connection is made by a pin |93. In its lower end the coupling has a socket 94 receiving the upper end of the rod 29 and the portion 39 of the seal 29 which is disposed over such end of the rod. It is noted that the upper or outer end of the rod 25 is annularly grooved and a securing means, generally designated |95, is provided and includes a pinlike part |96 provided with a flat side |91.

Part |96 is mounted for turning movement about its longitudinal axis and for its manipulation a lever |98 is secured to one of its ends. This ylever is moved to rock the part into a position with its fiat side |91 disposed toward the socket |94 and then the rod and cover 39 may be entered into the lower end of the socket.

Thereafter the lever is rocked to turn the part |96 into position with its at side |91 remote from the socket and with a portion of a round side entering such socket in a manner to crush a portion of the paper 39 into the annular groove in the end portion of the rod and to partly enter into such groove of the rod whereby to lock the outer or upper end of the latter to the coupling 53. Such coupling includes a series of platelike portions centering it in the tube 38.

Turning of the nut 9| on the screw 59 is prevented since the nut is provided with a depending post or extension |99 operating in a groove or slot H9 provided in the base The motor 4|, in addition to driving the reel 48, drives the -screw 59, all'as will now be described. To the 6. desired end the reel 48 is fastened as at (Fig. 5) to a sleevelike extension ||2 of the screw 59.

Further (see Fig. 6), at the outer side of the bearing 48 a set screw ||3 xes the worm gear 44 on the shaft 45 and at the inner side of such bearing a set screw ||4 iixes the hub I5 of a relatively large bevelled gear ||6 to the shaft 45. On such shaft is turnably mounted a carrier or pulley-like device ||8 between the rim ||9 and the hub |29 of which are mounted a pair of pins |2|, each carrying an outer bevelled pinion |22 and an inner bevelled pinion |23. Such inner bevelled pinions mesh with a, bevelled gear |24, the hub portion of which is fixed to a sleeve-like extension |25 of the worm or feed screw 59 by a screw |29.

Mounted on the base plate below the carrier |18 is a bracket |21 having pairs of upstanding ears |28 towards its ends. Between such ears are disposed the lower end portions of a pair of brake shoes |29 and |39 and such ends are pivoted to the ears as by pins |3|. The inner surface of brake shoes |29 and |39 are lined with a friction material as leather |32 or other friction material. At their upper ends and above the pulley the brake shoes |29 and |39 include extensions |33 and |34 on their inner surface provided with inclined or bevelled surfaces as at |35 and |39. Coil springs |31, mounted on a bolt |38 passing through the lugs or extensions |33 and |34, are constantly tending to force such extensions toward one another and clamp the brake shoes against the rim ||9 oi the carrier so as to hold the latter against turning movement.

An extension |39 of the lever arm 93 carries an inclined or wedge-shaped. piece |49 entering between lugs |33 and |34. rI'his wedge so functions that when the lever 64 is in the position of Figs. 2 and 5 with its rollers 58 holding clutch element 5| in clutching relation with ythe reel 98 the extension is in an upper position and is functioning by wedging against the inclined surfaces |35 and |35 to force the lugs or extensions |33 and |34 and thus the brake shoes |29 and |39 apart or outwardh7 with respect to one another so that the friction pads of such brake shoes are not engaging the rim of carrier H8. However, when the screw 34 is engaged to rock the lever 8| and tilt`the yoke 15 the lever arm 63 changes position and its wedge |49 moves downwardly to an inoperative position with respect to lugs |33 and |34. Now the springs |31 force the brake shoes toward one another bringing their friction pads |32. into engagement with the rim of the carrier or pulley-like device I8.

When the mechanism is to be put into use a sealed container is placed below the lower end of the tube 38 which is shown in Fig. 9 as of such length with relation to the base and the top of the container as to stop short of the bead 4| about the upper end of the closure neck 2.1. At this time the container is sealed and the clipper 24 is at the bottom of the container and the rod 21 has its upper end in the neck portion of the closure I3 and such end of the -rod is enclosed by the seal or bellows 29.

Now the exible means or chain 52 is unwound from the operating means or reel 48 vuntil the lower portion of the coupling 53 is below the lower end of the tube 38 and partly within the neck of the container, as shown by thefdottedr lines Fig. 9. It will be noted that assente,

the socket |94v is about the upper end portion of the rod and the portion 30 of the seal. At this time the key |98 is exposed below the lower end of the tube 38 as the sleeve 40 is in a raised position. Therefore, the key |98 is swung to a substantially horizontal position with the cutout or flat side |01 of pin |95 facing the socket so that the rod and the cover 30 may freely enter the socket.

Then the key is swung to a substantially ver tical position as shown and a portion of part |06 enters the groove in the rod 26 and locks the latter to the coupling as previously explained. Attention is called to the fact that during this time the upper flanges |4| of the coupling are within the tube 98 so that the coupling is kept in proper line and it will be clear that when the entire coupling is within the tube its flanges serve to keep the coupling aligned and against becoming tilted or wedged in the tube.

After the dipper rod 25 is secured to the coupling 53 as described the sleeve 40, which up until this time has been in an elevated out of the way position, is lowered into the position of Fig. 8 with its shoulder |42 resting on the upper end of the neck of the container closure. This sleeve keeps the container and the tube aligned and further serves to protect the paper or other disposable seal or bellows 29 in its portion that is exposed between the container and the lower end of the tube 38 during use of the machine.

Plate 85 is movable with the nut 9| as above set forth and such plate includes edges |43 and |44 spaced a shorter distance from the pivot screw 92 than are the edges |45, |46, |41 and |48 of the plate. At the end of a dispensing operation the dipper 24 is substantially in the full line position of Fig. 9. The motor is stopped and the lever 54 is in the position of Figs l and 2 so that the clutch element I is in clutching relation with the reel 48 and the latter is prevented from turning since it is directly geared back to the motor 4|.

Also at this time the nut 9| is in the position of Figs. 2 and 5 with either its side |43 or its side |44 toward but slightly spaced vfrom the screw 84. The machine is started into operation, preferably by coin controlled means, and here it `is again noted that the motor 4| always drives in the same direction. As the motor is started into operation it drives the feed screw 50 and the reel 48 further feeding the nut 9| toward the screw 94 and further winding the chain 52 onto the reel. This latter action results in a further slight tipping of the dipper but that is immaterial since the dipper has already poured its contents into the trough and out through the spout.

The former action however, that is the further movement of the nut 9|, results in the edge |43 of the nut engaging the screw 84 to rock the lever 8| and move the yoke 16 so as to permit the arm 63 of the lever 34 to rock downwardly. This releases clutch element 5| and also releases the brake shoes |29 and |30 so that they are drawn in against the rim of carrier ||8. Now the shaft 45 is free of the reel 48 and the drive is through the bevelled gear ||1 which rotates the pinions |22 and through the shafts |2l the pinions |23 which in turn drive the smaller bevelled gear |24 fixed on the screw 50.

However, the direction imparted to the screw by this drive is the reverse to that in which it was driven when the clutch 5| was coupled with the reel (as will be explained) so that screw 50 is 8 l now driven in a direction to feed the nut9l toward the tripping means 91 and to rotate reel 48 in a direction to unwind the chain 52 therefrom to lower the dipper in the container. This reverse movement of the reel 43 is more rapid than the movement which wound the chain thereon as the motor 4| is of the constant speed type but the drive to the feed screw and thus to the reel is now down through the smaller gear |24. This however, is a matter of selection of gear sizes and the ratio may be as desired and it may be arranged to have a faster upward movement of the dipper than a downward movement thereof, should such be desired.

When the dipper reaches the bottom of the container the nut 9| has carried the plate 95 over to such position that one of the pins 93 has engaged the cam or bevel end |02 of the tripping lever 91 so that the plate 85 will be turned and positioned with its surface |45 toward the screw 84'. Additionally, during the return movement of the nut, its cam surface 90 engaged the button 12 rocking the lever 54 about its pivot B5 to force clutch element 5| into clutching relation with the reel 49 and also causing the forward end of the lever extension |39 to work against the inclined surface |35 and |36 so as to spread the brake shoes |29 and |30.

Immediately, element 5|' is in clutching relation with the reel 48 the drive has changed so that the reel is being rotated in a direction to wind the chain thereon and raise the dipper. Now the drive is through shaft 45, to clutch element 5|, to the reel 48. The latter is xed to the screw 50 and the screw is fast to the smaller bevelled gear |24. Such'gear is in mesh with the bevelled pinions |23 on the same shafts with the bevelled pinions |22 with which the large bevelled gear I6 meshes.

Since bevelled gear l5 is also xed to the shaft |45 by the screw ||4 the carrier IIB and all of the gears associated therewith rotate as a unit about the shaft 45 and the small bevelled pinions |22 and |23 merely move around about the shaft with the large gears and do not rotate on their own axis. The rate o f drive of the reel and the feed screw during this operation is exactly the rate of rotation of the shaft 45 since there is no intervening gear ratio.

When the cam 99 of the nut engages button 12 and rocks the lever 54 to the position of Figs. 2 and 5, the reverse movement on the winding movement of the reel began immediately through the drive just described. Therefore, the screw 50 again feeds the nut 3| toward the lever in Fig. 2 but this time the surface E45 of the plate is facing the screw 84 and such surface of the plate is a greater .distance from the pivot screw 92 than was the surface |43.

Therefore, after a somewhat shorter movement the surface |45 engages screw 84, rocks the arm 8|, shifts the yoke 16 and releases the lever 64 so that it rocks on its pivot 65 carrying its rollers 58 outwardly to release the clutch element 5| and to lower the end |49 of the lever extension |39 to permit the brake shoes to again engage the rim of the carrier H3. Now the drive is, as first described, through gear ||5 to gear |24 and the dipper is lowered in the container and the nut 9| fed towards the right and it again engages the button 12 and rocks lever 64 'back to the position of Fig. 2. This again couples element 5| with the reel although during the feed movement one of the pins 93 engaged the tripper part |02 againshifung the plate ss so that its surface |46 faced the screw 84.

'.J Therefore, the return movement or the return feed of the nut again raising the dipper in the vcontainer is limited. At the end of the return movement the surface |46 of the plate engages screw 84, reverses the direction of movement of 'the reel and the nut to again raise the dipper and return the nut toward the right in Fig. 2. Now when the plate 85 is again shifted by engagement ltil the nut has made a rather long journey and ,the dipper has been elevated to the dispensing position of Fig. 9. At this time the nut is positioned as in Fig. 2 and when the dipper has been 'raised to the mentioned position any suitable lmeans opens the switch l^j| stopping the motor 4|.

A complete cycle of operation including three lowerings of the dipper into and through the contents of the container and two elevating movements, of which the second is a dispensing movement, have been described. The plate 85 is fed Y. yl Yof one ofv its pins 93 with the portion |52 of the '.tripper, the short edge |44 of the plate is towards the screw and on the next return movement of 4the nut the platedoes not engage the' screw unone step at a time so that its sides |43 and |44 .are used or are facing the screw'84 at each dispensing operation while its sides |45 and |46 control the machine for mixing movements between a pair 'of dispensing operations and its sides |41 and |48 control the machine for` mix-r ving movements between the next two dispensing operations. Clearly the number of sides on the plate may be varied.

It is desired that the machine stop with the dipper in a raised position since then if thereis Aa, long period between operations the initial movement of the dipper willbe a plunge downward through the cream which may have gathered at the top of the container. This initial lplunge will break' upthe solid cream formation and thereafter the mixing strokeswillserveto thoroughly mix the contents of the container. The container Qdoes not fall down in the contents but is rapidly fed downwardly therein so that there isnobang- Thegear means including gears I6 andl |174 and the intervening'small pinions |22 and |23,V .together with the carrier H8, provideV means whereby the motor may be continuously operated in the same directionv and yet the directionlof movementof the reel'and the screw 5|] reversed. Additionally, it provides means whereby various gear ratios may be employed so that the dipper may be raised at one speed and lowered at another. During the raising or elevating of the ,dipper the brake shoes |29 and I3@ are open but Yduring, the lowering operation they are closed to hold the pulley stationary so'that the gear ratio becomes effective to permit of more rapid lowering of the dipper.

Chain 52 is of a greater length than is actually needed to lower the dipper to the bottom of the sump. Thus, when the dipper is lowered and reaches the bottom of the sump, the chain continues to unwind while the dipper remains stationary. Then as the direction of the reel is reversed, its initial function is to take up the slack in the chainwhile the dipper remains in place. This'feature is of importance only when the con- "tainer is substantially empty. At such time Ythe dipper remains stationary in the sump for a brief time to permit the liquid to drain into the Adipper so that a full dipper is discharged even when the container is about empty. Under these 'same conditions the positive down feed of the Vdipper provides against the dipper falling and banging against the bottom of the container.

Attention is-also directed to the construction of the lugs 58 and 4g of the clutch element and the reel. In Figs. 12-14 it will be noted that lugs '49 are out down or bevelled on their upper surfaces tcward their free ends as at |50. Thus the Vactual free ends or points of these lugs are below the points or free ends of the lugs 58. -In addition, each lug, when viewed in plan, is wedgeshaped. Therefore, when the clutch element 5| is moved toward the reel 48 the actual ends of lugs 58 can never abut and lock or bind against the ends of lugs 4S, should the lugs happen to engage while in alignment lugs 58 will cam Yagainst surfaces |50 of lugs 49 and ride past them into positions overlapping and in proper driving relation therewith. This insures proper functioning of the clutch element 5| with relation to the reel V48 at allV times.

Having thus set forth the nature of our invention, what we claim is 'f 1. In` a liquid dispensing apparatus,V a container, a dipper in saidcontainer, a flexible connector, a coupling securing one end of said connector to the dipper, a reel, means securing the other end of said connector to the reel, an electricy motor and gear Ytrain including gear'means to rotate said reel in one direction to wind the connector thereon and elevate the dipper in the `container, said 'gear trainincluding gear means operable by said electric motor after predetermined movement of the dipperto drive said reel -in the opposite direction to unwind the connector therefrom and lower the dipper inthe container, and means then operable to render the `first-mentioned gear means again operable to ro- ;t'ate the reel in the first mentioned direction to wind the connector thereon and elevate the dipperto a discharge position.

2. lIn a liquid dispensing apparatus.` la container, a dipper in said container, a shaft. an elec- 'tric motor and gear'train for rotating said shaft in one directiom an operating means freely turnable about said shaft,- a connector secured at one end to saiddipper and'at its otherend to'said -operating'nieans, clutch lmeans for driving said operating means from said shaft when the latter 'is rotated in said one direction to raise the connector and move the dipper upwardly in said container, and means whereby said electric motor and gear train thereafter drive said operating means in the opposite direction to lower the connector and move the dipper downwardly in the container.

3. In a liquid dispensing apparatus, a container, a dipper in said container, an electric motor, a gear train including a gear means operable by said motor for raising the dipper in the container, said gear train including other gear means then operable by said motor for lowering the dipper in the container, said other gear means of a different ratio whereby to lower the dipper at a rate of speed different from that at which the dipper was raised in the container, and each of said means including means where.-

Ily

tfyltt notariaat @in @were the ettari time the motor is operating in asingle direction. D Lmln a liquid dispensing .apparatus, aV coiftainer, adipper in said oontainer, a shaft,an electric motor connected to drive said shaft,l a reel turnableon said shaft, a flexible connector secured at one end to said dipper and at its other end to said reel, means for driving the reel from the shaft to wind upsaidconnector and move the dipper to discharge position, means then operable torelease the reelfromthe shaft and to open the circuit of vthe motor, and other vmeans connecting said reel with said motor whereby the latter holds the reel against any suchrnovement as to permitof unwinding of the flexible connector therefrom-whereby the motor holds the dipper ineseheiee positivif 1 5,. In a liquid dispensing apparatus, a container@ dipperin, seid container., je eenneeton .e coupling securing one end of said connector t the dipper, an operating means, means seciiring the otherend of the connector to said, Qpealltg means, means to move said operatingmeans to raise the dipper inthe container, power means to movesaid operating means in the oppositedirecdtion following the predetermined raising of the dipper, in the containerto move the dipper downwardly in the container, means thenoperable t9 render the first mentioned. means again operable to move the operating means agreater distance and raise the dipper toa discharge position, and means whereby both the means forraising the dipper and the means for lowering thedipperare operated by an, electric motor having a single direction of movement. v 6.111 a .liquid d ispensing1. apIParatus,A a container, a dipper in said container, a shaft, a feed screw on and turnable about said rs haf t a reel fixed to said feedscrew, a flexible connector connected at one end tothe dipper and atits other end Yto seid ljeel, .means feseteligg the reelfrom the shaft to windnpsaidconnectorand raise the dipper, in said contanten rne`ens -inen operable lto release the reel from the shaft, means then operable dliveSed }eed;59few and thus seid. reel in file eppsie direction, i0 loweru the. dipper. in the eentenena nut 0n. the feed Screw end mOi/eme ennethe Seme .in ditegtions depending on the direction in the screwis rotating, ar 1d mea'ns engageable b yjhsaid nut Operable te disennegt the mevSQUOleling vtl 1e reel from the shaft on p r edetermined movement 0f the Init in Olie drti 21 7. In alquid dispensing .afpperaiua e, 901?- teiner, .a dipper in seid eeneinel, 2 Sheft e feed screw onand turnable al )out said shalft,y a reel exed to. seid feed screw, .e flexible ,eenneer een.- nected at onel end Ato the dipper and at its other end tov said reel, means for rotating the ree 1 f1` 0m vthe shaft to windrup `said connector and raise the dipper in said container,V Ineens thenoeleblef@ release thereel from the shaft, means arranged for actuation by said last named means,.tc drive said feed screw and thus said reel inthe opposite direction to lower thedpper in theonleleri nut on the feed screw and movable along the same iii dirctids' diinaig c"r Which the SQYEW is rotating. mals said mit operable to' disagiate@ th rotating the reelfroin th shaft o`n pre'dte' movernntof. th mitin one direfction, [a o means operable bysaijd nut to again cnnetnij means for rotatin'g'th'e reelfrom the shafton predetermined movement of the nut in the 'oppsite direction. Yr

38.111 fa liquid dispensing apparatus, a 'conftainer, a dipperinfsaid container, a shaft, a feed serpe/ enana minable atout said shame reci fixed to said feedScreWalXibl onnec'toren'f nected at voneend ,t' th"e' iipeiv a'd 'at its other end to Ysaid reel, means for rotating tl1` e iel fro m the shaft to' wind up 'said connectorand 'raise the dipper injsaid container, means then operable@ 'release the vreel freni said last named me means then-oprab1e to drive said `fe',efdvscrew jand b hs sai@ rl inthe' opposite 'direction ,toiowr the dipper inthe container, ahnt on the feed screw and movable along the same in direct"y dependingonthe directioriin which the sc re rota ng, means, ngageableby Yand located between said bevelled gears, bevelled pinions mounted by said carrier and meshing with and capable, of establishing Va driving con'- nection between said `bevelled gears', 'said carrier freeli7 rotatableab'ot the axis of v said 'Shaft whereby ,the carrier, bevell'ed gears and bevelle'd pinions may all rotate as a unit about the axisf'of the 'shaft `for driving 'of therelin one direction, and brake 4nie'ar'is ada "edto, hold said carrier against vturning mo vement whereby the bevelled gear on the shaftdrives th'ebevelled 'gear Yon the feed 'screw through saidfbevelled p'inions Tand the feed 'screw and reel 'are d'riven in the opposite direction. A

POLSEN.

SVFN HERBERT NELSON.

yRiniERENCES CITED The following references are of record 'in 'the file of this patent: A UNITED STATES PATENTS Number V Name Date 1,304,305 Geier 1 Mey 20, 1919 1,494,631 R@parte 'May 2 0, V192,21 1,765,625 Geary June `24, 41930 1,780,475 Gold Nov. 4, 19,30 `1,855,414 Fey 1 Apny 26, 1932 '1,907,619 E Tanhcfer May 9, 1933 1,960,339 Mcieerra'n May 29, 1934 2,009,191 kBuckles 'July z3, 4'1935 2,049,126 Maybach Ju1y28, 1j936 2,078,161 Rietsch f 1p`r. 20, 1937 2,301,543 Hiavaty Nov. 10,51942 2,378,430 Polsen June 19, 1945 

